Use of crown compounds (cyclic polyethers) in litho developers t

Details Use of crown compounds (cyclic polyethers) in litho developers t Use of crown compounds (cyclic polyethers) in litho developers t

1976-01-07

1977-04-12

Kelley, Mary F.

Gas separation: apparatus

Electric field separation apparatus

Including gas flow distribution means

G03C 530

Patent

active

040173143

ABSTRACT:
A photographic developer for high contrast lithographic films comprising a conventional hydroquinone formaldehyde bisulfite developer and a crown compound (cyclic polyether) e.g. dibenzo-30-crown-10.

REFERENCES:
patent: 2477323 (1949-07-01), Wood
patent: 3062646 (1962-11-01), Dann et al.
patent: 3749574 (1973-07-01), Pollet et al.

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